Herein, through a simple and environmentally benign mechanical lapping, synchronous phosphorization pyrolysis and NaBH₄ reduction procedure, we have successfully constructed a novel nanoarchitecture, which confines bimetallic phosphides (NiCoP_x) within mesoporous carbon as Pt support for the first time (Pt/NiCoP_x@NCNT-NG). Unlike conventional naked transition metal phosphides/carbon hybrids supports, the NiCoP_x is encapsulated by graphene shells, in spite of without immediate contact, the electron interactions between NiCoP_x and Pt outperform its monometallic phosphide counterparts. Benefiting from the synergistic effect between Pt, NiCoP_x and mesoporous carbon, the Pt/NiCoP_x@NCNT-NG reveals increased active sites and enhanced intrinsic activity of per active site, resulting in better catalytic activity and stability for methanol oxidation reaction. What's more, owing to the protection of the encapsulation carbon layer, the co-catalytic effect of NiCoP_x can be well maintained after a long-time exposure. The present work provides a simple avenue to combine transition metal phosphides with mesoporous carbon and sheds new light into the development direction of transition metal phosphides for electrocatalysis.

在此，通过简单且对环境无害的机械研磨，同步磷化热解和NaBH ₄还原程序，我们成功地构建了一种新型的纳米结构，该结构首次将双金属磷化物（NiCoP _x）限制在中孔碳中作为Pt载体（Pt / NiCoP _x @ NCNT-NG）。与传统的裸露过渡金属磷化物/碳杂化物载体不同，NiCoP _x被石墨烯壳包裹，尽管没有立即接触，NiCoP _x和Pt之间的电子相互作用却优于其单金属磷化物。受益于Pt，NiCoP _x和中孔碳之间的协同效应，Pt / NiCoP_x @ NCNT-NG揭示了增加的活性位点和每个活性位点的固有活性，从而为甲醇氧化反应提供了更好的催化活性和稳定性。而且，由于包封碳层的保护，长时间暴露后可以很好地保持NiCoP _x的共催化作用。本工作提供了将过渡金属磷化物与中孔碳结合的简单途径，并为过渡金属磷化物的电催化发展方向提供了新的思路。